java生成一维码并且在下面显示一维码内容

以下是Java生成一维码并在下方显示一维码内容的示例代码：

import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;

import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;

import org.apache.commons.lang3.StringUtils;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.oned.Code128Writer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

public class OneDimBarcodeGenerator {

    public static void main(String[] args) {
        String text = "One-dimensional barcode content";

        try {
            BufferedImage barcodeImage = generateOneDimBarcode(text);

            // Display the barcode image and text in a JFrame
            EventQueue.invokeLater(() -> {
                JFrame frame = new JFrame("One-dimensional Barcode");

                frame.setSize(400, 200);
                frame.setLocationRelativeTo(null);
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

                JPanel panel = new JPanel() {
                    @Override
                    protected void paintComponent(Graphics g) {
                        super.paintComponent(g);
                        g.drawImage(barcodeImage, 0, 0, null);
                        g.drawString(text, 50, 150);
                    }
                };

                frame.setContentPane(panel);
                frame.setVisible(true);
            });
        } catch (WriterException | IOException e) {
            e.printStackTrace();
        }
    }

    public static BufferedImage generateOneDimBarcode(String text) throws WriterException, IOException {
        // Set the barcode format and encoding hint
        Code128Writer writer = new Code128Writer();
        HashMap<EncodeHintType, Object> hints = new HashMap<>();
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);

        // Generate the bit matrix and write it to an image
        BitMatrix bitMatrix = writer.encode(text, BarcodeFormat.CODE_128, 400, 200, hints);
        BufferedImage barcodeImage = MatrixToImageWriter.toBufferedImage(bitMatrix);

        return barcodeImage;
    }

}

该示例使用Google的ZXing库生成一维码，并在JFrame中显示一维码图像和下方的一维码内容。如果您想在控制台中显示一维码，可以简单地使用`System.out.println(text);`来打印一维码内容。